Lightning-arrester resistance.



No. 895,956. PATENTBD AUG. 11 1908;

H. 'W. BUCK.

, LIGHTNING ARRESTER RESISTAEGB.

APPLICATION FILED 5101.25, 1907.

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UNITED strA'rEs PATENT ornron.

HAROLD W.- BUCK, OFNEWJ'YORK, N. Y., ASIGNORTO GENERAL ELECTRIC COMPANY, A

CORPORATION OF'NEW YORK, v

LIGHTNING-ARRESTER RESISTANCE. e

To all whom it" nay concern:

'Be it known hat I, HARQLD W. BUCK, a v citizen of the United States, residing at New York, county of New York, State-of New York, have invented certain newand useful Improvements in Lightning-Arrester Resistances, of which the following is a specification.

the market include a resistance connected in series with spark ga vs. These resistances are in some cases ma e of graphite or carborundum then fire My present invention comprises a new type of'resistance possessing many advantages and suitable for use in the place of the graphite and carborundum mentioned; or in fact, suita le for use in connection with any lightning arrester sub- My im roved form of resistance may be subjecte to sudden heating without the fear that it will crack or disintegrate or change materially in resistance.

My invention comprises a woven'hose or.

tube of fibrous fire proof insulating material filled with loose granules of owdered resistance material. A hose of t is kind ma be woven of any length or diameter, then led withthe resistance powder or mixture, and arranged in any convenient way as a lightningarrester resistance. One' way of utilizing such a resistance is shown in the diagrammatic drawing accompanying this specification.

Figure 1 is a sectional elevation of a l ghtning .arrester connected with one conductor of a transmission line and Fig. 2 is a'detail view of the flexible resistance;

The line conductor 1 is ,suppqiil'ed on standards or poles 2 in ordinary manner and is connected with a pluralitygof spark gaps 3,

4 and 5 mounted on the cross bar 6 connecting the standards 2. These spark gaps may be of the horn typ'efior of other; standard form and serve to insulate the lineflconductor,

from ound whe'njjthe lineis at normal potential. Spark. gap 5, the last of the se- Several types of lightning arresters now on ressed into the form of a pencil and encils above I Specification of Letters Patent. Application flied January 25, 1907. Serial No. asaos'z.

' Patented Aug. 11, 1,908.

ries, is connected directly to round through a resistance 7 of the type iereinafter describedmore in detail.

The series resistance comprises 'an outer tube or envelop 8 of non-conductive mate rial, and a loose filling 9 of resistance material. I may make the envelop of fire proof material such as fibrous asbestos, and the filling may be powdered carborundum, kryptol, lamp black, graphite, or any one of theabovesubstances mixed with sand, ce-

ment, or other non-conducting refractory materials to increase the resistance of the powderj The length and cross-section of the hose will depend somewhat on the voltage of the line to be protected, and on other conditions of each The hose is more or ess flexible and can be hung directly from the spark gap support to ground as shown in the drawing. It is heat proof and cannot be cracked, even thou h the current conducted to ground may 6 momentarily very high.

What I by Letters Patent of the United States, is,

1. A li hting arrester resistance'consisting of a flexible heat proof envelop containing granular resistance material.

2. A lighting arrester resistance consisting of a woven heat proof tube Containing granu litT-IGSiSt'illCG material. 3. A flexible lightning arrester resistance, comprising a woven tube of fibrous fire proof insulating material filled withloose granules of owered resistance material.

4. A flexi le resistance unit for lightning arresters, consisting of a woven envelop of fibrousv asbestos with a filling of granular resistance material.

, 5'. A resistance unit for lightning arresters,

consisting of a Woven heat proof tube of insulating material, filled with granular resistance material.

In witness whereof, I have hereunto set my hand this 22nd day of January, 1907. HAROLD W. BUCK. Witnesses:

WM. W. BLAIR, W. D. BEARDSLEY.

claim as new, and desire to secure articular installation. I 

